Which of the following minerals produces green colour in fireworks?

The correct answer is option 2. Barium.

The mineral that produces the green color in fireworks is 2. Barium.

Here's why the other options are incorrect:

Sodium: Sodium is responsible for producing a yellow color in fireworks.

Zinc: Zinc doesn't contribute significantly to the colors in fireworks.

Copper: Copper produces blue flames in fireworks.